EPSSolve#

Solves the eigensystem.

Synopsis#

#include "slepceps.h" 
PetscErrorCode EPSSolve(EPS eps)

Collective

Input Parameter#

eps - the linear eigensolver context

Options Database Keys#

-eps_view - print information about the solver used
-eps_view_mat0 - view the first matrix (A)
-eps_view_mat1 - view the second matrix (B)
-eps_view_vectors - view the computed eigenvectors
-eps_view_values - view the computed eigenvalues
-eps_converged_reason - print reason for convergence, and number of iterations
-eps_error_absolute - print absolute errors of each eigenpair
-eps_error_relative - print relative errors of each eigenpair
-eps_error_backward - print backward errors of each eigenpair

Notes#

All the command-line options listed above admit an optional argument specifying the viewer type and options. For instance, use ‘-eps_view_mat0 binary:amatrix.bin’ to save the A matrix to a binary file, ‘-eps_view_values draw’ to draw the computed eigenvalues graphically, or ‘-eps_error_relative :myerr.m:ascii_matlab’ to save the errors in a file that can be executed in Matlab.

Level#

beginner

Location#

src/eps/interface/epssolve.c

Examples#

src/eps/tutorials/ex31.c
src/eps/tutorials/ex55.c
src/eps/tutorials/ex9.c
src/eps/tutorials/ex3.c
src/eps/tutorials/ex29.c
src/eps/tutorials/ex6f.F90
src/eps/tutorials/ex2.c
src/eps/tutorials/ex36.c
src/eps/tutorials/ex18.c
src/eps/tutorials/ex1f.F90

Implementations#

Index of all EPS routines Table of Contents for all manual pages Index of all manual pages